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Finding the Fourth Proportional to 751.16, 1,124.88 and 442.22

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Solution

The fourth proportional to 751.16, 1,124.88 and 442.22 is: 662.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.16 : 1,124.88 = 442.22 : x
  2. Step 2: Convert to fraction form
    751.16/1,124.88 = 442.22/x
  3. Step 3: Cross multiply
    751.16x = 1,124.88 × 442.22
  4. Step 4: Simplify right side
    751.16x = 497,444.43
  5. Step 5: Solve for x
    x = 497,444.43/751.16
  6. Step 6: Final answer
    x = 662.23

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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.