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Finding the Fourth Proportional to 887.73, 1,225.06 and 514.78

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Solution

The fourth proportional to 887.73, 1,225.06 and 514.78 is: 710.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.73 : 1,225.06 = 514.78 : x
  2. Step 2: Convert to fraction form
    887.73/1,225.06 = 514.78/x
  3. Step 3: Cross multiply
    887.73x = 1,225.06 × 514.78
  4. Step 4: Simplify right side
    887.73x = 630,633.32
  5. Step 5: Solve for x
    x = 630,633.32/887.73
  6. Step 6: Final answer
    x = 710.39

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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.