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Finding the Fourth Proportional to 1,046.33, 1,560.35 and 916.93

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Solution

The fourth proportional to 1,046.33, 1,560.35 and 916.93 is: 1,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.33 : 1,560.35 = 916.93 : x
  2. Step 2: Convert to fraction form
    1,046.33/1,560.35 = 916.93/x
  3. Step 3: Cross multiply
    1,046.33x = 1,560.35 × 916.93
  4. Step 4: Simplify right side
    1,046.33x = 1,430,731.73
  5. Step 5: Solve for x
    x = 1,430,731.73/1,046.33
  6. Step 6: Final answer
    x = 1,367.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.