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Finding the Fourth Proportional to 927.52, 1,277.98 and 665.08

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Solution

The fourth proportional to 927.52, 1,277.98 and 665.08 is: 916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.52 : 1,277.98 = 665.08 : x
  2. Step 2: Convert to fraction form
    927.52/1,277.98 = 665.08/x
  3. Step 3: Cross multiply
    927.52x = 1,277.98 × 665.08
  4. Step 4: Simplify right side
    927.52x = 849,958.94
  5. Step 5: Solve for x
    x = 849,958.94/927.52
  6. Step 6: Final answer
    x = 916.38

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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.