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Finding the Fourth Proportional to 887.99, 1,225.56 and 677.76

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Solution

The fourth proportional to 887.99, 1,225.56 and 677.76 is: 935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.99 : 1,225.56 = 677.76 : x
  2. Step 2: Convert to fraction form
    887.99/1,225.56 = 677.76/x
  3. Step 3: Cross multiply
    887.99x = 1,225.56 × 677.76
  4. Step 4: Simplify right side
    887.99x = 830,635.55
  5. Step 5: Solve for x
    x = 830,635.55/887.99
  6. Step 6: Final answer
    x = 935.42

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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.