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Finding the Fourth Proportional to 1,588.32, 2,191.50 and 925.20

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Solution

The fourth proportional to 1,588.32, 2,191.50 and 925.20 is: 1,276.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.32 : 2,191.50 = 925.20 : x
  2. Step 2: Convert to fraction form
    1,588.32/2,191.50 = 925.20/x
  3. Step 3: Cross multiply
    1,588.32x = 2,191.50 × 925.20
  4. Step 4: Simplify right side
    1,588.32x = 2,027,575.80
  5. Step 5: Solve for x
    x = 2,027,575.80/1,588.32
  6. Step 6: Final answer
    x = 1,276.55

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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.