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Finding the Fourth Proportional to 387.53, 534.54 and 247.59

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Solution

The fourth proportional to 387.53, 534.54 and 247.59 is: 341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.53 : 534.54 = 247.59 : x
  2. Step 2: Convert to fraction form
    387.53/534.54 = 247.59/x
  3. Step 3: Cross multiply
    387.53x = 534.54 × 247.59
  4. Step 4: Simplify right side
    387.53x = 132,346.76
  5. Step 5: Solve for x
    x = 132,346.76/387.53
  6. Step 6: Final answer
    x = 341.52

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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.