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Finding the Fourth Proportional to 487.30, 730.43 and 240.15

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Solution

The fourth proportional to 487.30, 730.43 and 240.15 is: 359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.30 : 730.43 = 240.15 : x
  2. Step 2: Convert to fraction form
    487.30/730.43 = 240.15/x
  3. Step 3: Cross multiply
    487.30x = 730.43 × 240.15
  4. Step 4: Simplify right side
    487.30x = 175,412.76
  5. Step 5: Solve for x
    x = 175,412.76/487.30
  6. Step 6: Final answer
    x = 359.97

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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.