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Finding the Fourth Proportional to 740.60, 1,111.11 and 625.32

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Solution

The fourth proportional to 740.60, 1,111.11 and 625.32 is: 938.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.60 : 1,111.11 = 625.32 : x
  2. Step 2: Convert to fraction form
    740.60/1,111.11 = 625.32/x
  3. Step 3: Cross multiply
    740.60x = 1,111.11 × 625.32
  4. Step 4: Simplify right side
    740.60x = 694,799.31
  5. Step 5: Solve for x
    x = 694,799.31/740.60
  6. Step 6: Final answer
    x = 938.16

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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.