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Finding the Fourth Proportional to 913.05, 1,367.98 and 652.57

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Solution

The fourth proportional to 913.05, 1,367.98 and 652.57 is: 977.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.05 : 1,367.98 = 652.57 : x
  2. Step 2: Convert to fraction form
    913.05/1,367.98 = 652.57/x
  3. Step 3: Cross multiply
    913.05x = 1,367.98 × 652.57
  4. Step 4: Simplify right side
    913.05x = 892,702.71
  5. Step 5: Solve for x
    x = 892,702.71/913.05
  6. Step 6: Final answer
    x = 977.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.