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Finding the Fourth Proportional to 501.79, 752.75 and 339.13

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Solution

The fourth proportional to 501.79, 752.75 and 339.13 is: 508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.79 : 752.75 = 339.13 : x
  2. Step 2: Convert to fraction form
    501.79/752.75 = 339.13/x
  3. Step 3: Cross multiply
    501.79x = 752.75 × 339.13
  4. Step 4: Simplify right side
    501.79x = 255,280.11
  5. Step 5: Solve for x
    x = 255,280.11/501.79
  6. Step 6: Final answer
    x = 508.74

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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.