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Finding the Fourth Proportional to 1,060.56, 1,590.03 and 411.21

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Solution

The fourth proportional to 1,060.56, 1,590.03 and 411.21 is: 616.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.56 : 1,590.03 = 411.21 : x
  2. Step 2: Convert to fraction form
    1,060.56/1,590.03 = 411.21/x
  3. Step 3: Cross multiply
    1,060.56x = 1,590.03 × 411.21
  4. Step 4: Simplify right side
    1,060.56x = 653,836.24
  5. Step 5: Solve for x
    x = 653,836.24/1,060.56
  6. Step 6: Final answer
    x = 616.50

Related Problems

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Half scale
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Double scale
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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.