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Finding the Fourth Proportional to 520.25, 717.75 and 333.72

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Solution

The fourth proportional to 520.25, 717.75 and 333.72 is: 460.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.25 : 717.75 = 333.72 : x
  2. Step 2: Convert to fraction form
    520.25/717.75 = 333.72/x
  3. Step 3: Cross multiply
    520.25x = 717.75 × 333.72
  4. Step 4: Simplify right side
    520.25x = 239,527.53
  5. Step 5: Solve for x
    x = 239,527.53/520.25
  6. Step 6: Final answer
    x = 460.41

Related Problems

Find fourth proportional to 260.13, 358.88 and 166.86
Half scale
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Double scale
Find fourth proportional to 521.25, 719.13 and 334.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.