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Finding the Fourth Proportional to 1,040.92, 1,569.37 and 970.42

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Solution

The fourth proportional to 1,040.92, 1,569.37 and 970.42 is: 1,463.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.92 : 1,569.37 = 970.42 : x
  2. Step 2: Convert to fraction form
    1,040.92/1,569.37 = 970.42/x
  3. Step 3: Cross multiply
    1,040.92x = 1,569.37 × 970.42
  4. Step 4: Simplify right side
    1,040.92x = 1,522,948.04
  5. Step 5: Solve for x
    x = 1,522,948.04/1,040.92
  6. Step 6: Final answer
    x = 1,463.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.