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Finding the Fourth Proportional to 520.76, 718.83 and 334.76

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Solution

The fourth proportional to 520.76, 718.83 and 334.76 is: 462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.76 : 718.83 = 334.76 : x
  2. Step 2: Convert to fraction form
    520.76/718.83 = 334.76/x
  3. Step 3: Cross multiply
    520.76x = 718.83 × 334.76
  4. Step 4: Simplify right side
    520.76x = 240,635.53
  5. Step 5: Solve for x
    x = 240,635.53/520.76
  6. Step 6: Final answer
    x = 462.09

Related Problems

Find fourth proportional to 260.38, 359.42 and 167.38
Half scale
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Double scale
Find fourth proportional to 521.76, 720.21 and 335.76
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.