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Finding the Fourth Proportional to 1,001.18, 1,501.32 and 453.80

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Solution

The fourth proportional to 1,001.18, 1,501.32 and 453.80 is: 680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.18 : 1,501.32 = 453.80 : x
  2. Step 2: Convert to fraction form
    1,001.18/1,501.32 = 453.80/x
  3. Step 3: Cross multiply
    1,001.18x = 1,501.32 × 453.80
  4. Step 4: Simplify right side
    1,001.18x = 681,299.02
  5. Step 5: Solve for x
    x = 681,299.02/1,001.18
  6. Step 6: Final answer
    x = 680.50

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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.