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Finding the Fourth Proportional to 738.32, 1,018.26 and 572.24

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Solution

The fourth proportional to 738.32, 1,018.26 and 572.24 is: 789.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.32 : 1,018.26 = 572.24 : x
  2. Step 2: Convert to fraction form
    738.32/1,018.26 = 572.24/x
  3. Step 3: Cross multiply
    738.32x = 1,018.26 × 572.24
  4. Step 4: Simplify right side
    738.32x = 582,689.10
  5. Step 5: Solve for x
    x = 582,689.10/738.32
  6. Step 6: Final answer
    x = 789.21

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1.5x scale

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.