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Finding the Fourth Proportional to 899.59, 1,237.71 and 702.76

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Solution

The fourth proportional to 899.59, 1,237.71 and 702.76 is: 966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.59 : 1,237.71 = 702.76 : x
  2. Step 2: Convert to fraction form
    899.59/1,237.71 = 702.76/x
  3. Step 3: Cross multiply
    899.59x = 1,237.71 × 702.76
  4. Step 4: Simplify right side
    899.59x = 869,813.08
  5. Step 5: Solve for x
    x = 869,813.08/899.59
  6. Step 6: Final answer
    x = 966.90

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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.