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Finding the Fourth Proportional to 1,045.81, 1,569.37 and 948.49

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Solution

The fourth proportional to 1,045.81, 1,569.37 and 948.49 is: 1,423.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.81 : 1,569.37 = 948.49 : x
  2. Step 2: Convert to fraction form
    1,045.81/1,569.37 = 948.49/x
  3. Step 3: Cross multiply
    1,045.81x = 1,569.37 × 948.49
  4. Step 4: Simplify right side
    1,045.81x = 1,488,531.75
  5. Step 5: Solve for x
    x = 1,488,531.75/1,045.81
  6. Step 6: Final answer
    x = 1,423.33

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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.