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Finding the Fourth Proportional to 887.38, 1,225.16 and 572.79

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Solution

The fourth proportional to 887.38, 1,225.16 and 572.79 is: 790.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.38 : 1,225.16 = 572.79 : x
  2. Step 2: Convert to fraction form
    887.38/1,225.16 = 572.79/x
  3. Step 3: Cross multiply
    887.38x = 1,225.16 × 572.79
  4. Step 4: Simplify right side
    887.38x = 701,759.40
  5. Step 5: Solve for x
    x = 701,759.40/887.38
  6. Step 6: Final answer
    x = 790.82

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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.