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Finding the Fourth Proportional to 1,525.74, 2,286.74 and 702.87

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Solution

The fourth proportional to 1,525.74, 2,286.74 and 702.87 is: 1,053.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.74 : 2,286.74 = 702.87 : x
  2. Step 2: Convert to fraction form
    1,525.74/2,286.74 = 702.87/x
  3. Step 3: Cross multiply
    1,525.74x = 2,286.74 × 702.87
  4. Step 4: Simplify right side
    1,525.74x = 1,607,277.43
  5. Step 5: Solve for x
    x = 1,607,277.43/1,525.74
  6. Step 6: Final answer
    x = 1,053.44

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1.5x scale

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.