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Finding the Fourth Proportional to 508.57, 761.48 and 400.13

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Solution

The fourth proportional to 508.57, 761.48 and 400.13 is: 599.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.57 : 761.48 = 400.13 : x
  2. Step 2: Convert to fraction form
    508.57/761.48 = 400.13/x
  3. Step 3: Cross multiply
    508.57x = 761.48 × 400.13
  4. Step 4: Simplify right side
    508.57x = 304,690.99
  5. Step 5: Solve for x
    x = 304,690.99/508.57
  6. Step 6: Final answer
    x = 599.11

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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.