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Finding the Fourth Proportional to 1,149, 1,585.62 and 625.03

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Solution

The fourth proportional to 1,149, 1,585.62 and 625.03 is: 862.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149 : 1,585.62 = 625.03 : x
  2. Step 2: Convert to fraction form
    1,149/1,585.62 = 625.03/x
  3. Step 3: Cross multiply
    1,149x = 1,585.62 × 625.03
  4. Step 4: Simplify right side
    1,149x = 991,060.07
  5. Step 5: Solve for x
    x = 991,060.07/1,149
  6. Step 6: Final answer
    x = 862.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.