Home / 1,154.35-1,731.52-288.66

Finding the Fourth Proportional to 1,154.35, 1,731.52 and 288.66

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Solution

The fourth proportional to 1,154.35, 1,731.52 and 288.66 is: 432.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.35 : 1,731.52 = 288.66 : x
  2. Step 2: Convert to fraction form
    1,154.35/1,731.52 = 288.66/x
  3. Step 3: Cross multiply
    1,154.35x = 1,731.52 × 288.66
  4. Step 4: Simplify right side
    1,154.35x = 499,820.56
  5. Step 5: Solve for x
    x = 499,820.56/1,154.35
  6. Step 6: Final answer
    x = 432.99

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Double scale
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Similar ratio
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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.