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Finding the Fourth Proportional to 632.13, 947.88 and 256.74

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Solution

The fourth proportional to 632.13, 947.88 and 256.74 is: 384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.13 : 947.88 = 256.74 : x
  2. Step 2: Convert to fraction form
    632.13/947.88 = 256.74/x
  3. Step 3: Cross multiply
    632.13x = 947.88 × 256.74
  4. Step 4: Simplify right side
    632.13x = 243,358.71
  5. Step 5: Solve for x
    x = 243,358.71/632.13
  6. Step 6: Final answer
    x = 384.98

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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.