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Finding the Fourth Proportional to 1,061.17, 1,590.12 and 444.54

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Solution

The fourth proportional to 1,061.17, 1,590.12 and 444.54 is: 666.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.17 : 1,590.12 = 444.54 : x
  2. Step 2: Convert to fraction form
    1,061.17/1,590.12 = 444.54/x
  3. Step 3: Cross multiply
    1,061.17x = 1,590.12 × 444.54
  4. Step 4: Simplify right side
    1,061.17x = 706,865.66
  5. Step 5: Solve for x
    x = 706,865.66/1,061.17
  6. Step 6: Final answer
    x = 666.12

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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.