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Finding the Fourth Proportional to 745.01, 1,124.19 and 715.04

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Solution

The fourth proportional to 745.01, 1,124.19 and 715.04 is: 1,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.01 : 1,124.19 = 715.04 : x
  2. Step 2: Convert to fraction form
    745.01/1,124.19 = 715.04/x
  3. Step 3: Cross multiply
    745.01x = 1,124.19 × 715.04
  4. Step 4: Simplify right side
    745.01x = 803,837.24
  5. Step 5: Solve for x
    x = 803,837.24/745.01
  6. Step 6: Final answer
    x = 1,078.96

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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.