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Finding the Fourth Proportional to 951.92, 1,314.45 and 672.77

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Solution

The fourth proportional to 951.92, 1,314.45 and 672.77 is: 928.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.92 : 1,314.45 = 672.77 : x
  2. Step 2: Convert to fraction form
    951.92/1,314.45 = 672.77/x
  3. Step 3: Cross multiply
    951.92x = 1,314.45 × 672.77
  4. Step 4: Simplify right side
    951.92x = 884,315.95
  5. Step 5: Solve for x
    x = 884,315.95/951.92
  6. Step 6: Final answer
    x = 928.99

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Half scale
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Double scale
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1.5x scale

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.