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Finding the Fourth Proportional to 1,001.60, 1,501.38 and 416.91

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Solution

The fourth proportional to 1,001.60, 1,501.38 and 416.91 is: 624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.60 : 1,501.38 = 416.91 : x
  2. Step 2: Convert to fraction form
    1,001.60/1,501.38 = 416.91/x
  3. Step 3: Cross multiply
    1,001.60x = 1,501.38 × 416.91
  4. Step 4: Simplify right side
    1,001.60x = 625,940.34
  5. Step 5: Solve for x
    x = 625,940.34/1,001.60
  6. Step 6: Final answer
    x = 624.94

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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.