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Finding the Fourth Proportional to 751.59, 1,127.66 and 510.39

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Solution

The fourth proportional to 751.59, 1,127.66 and 510.39 is: 765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.59 : 1,127.66 = 510.39 : x
  2. Step 2: Convert to fraction form
    751.59/1,127.66 = 510.39/x
  3. Step 3: Cross multiply
    751.59x = 1,127.66 × 510.39
  4. Step 4: Simplify right side
    751.59x = 575,543.84
  5. Step 5: Solve for x
    x = 575,543.84/751.59
  6. Step 6: Final answer
    x = 765.77

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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.