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Finding the Fourth Proportional to 284.56, 392.10 and 240.76

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Solution

The fourth proportional to 284.56, 392.10 and 240.76 is: 331.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.56 : 392.10 = 240.76 : x
  2. Step 2: Convert to fraction form
    284.56/392.10 = 240.76/x
  3. Step 3: Cross multiply
    284.56x = 392.10 × 240.76
  4. Step 4: Simplify right side
    284.56x = 94,402.00
  5. Step 5: Solve for x
    x = 94,402.00/284.56
  6. Step 6: Final answer
    x = 331.75

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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.