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Finding the Fourth Proportional to 520.49, 779.42 and 471.18

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Solution

The fourth proportional to 520.49, 779.42 and 471.18 is: 705.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.49 : 779.42 = 471.18 : x
  2. Step 2: Convert to fraction form
    520.49/779.42 = 471.18/x
  3. Step 3: Cross multiply
    520.49x = 779.42 × 471.18
  4. Step 4: Simplify right side
    520.49x = 367,244.76
  5. Step 5: Solve for x
    x = 367,244.76/520.49
  6. Step 6: Final answer
    x = 705.58

Related Problems

Find fourth proportional to 260.24, 389.71 and 235.59
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.