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Finding the Fourth Proportional to 613.52, 918.84 and 510.80

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Solution

The fourth proportional to 613.52, 918.84 and 510.80 is: 765.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.52 : 918.84 = 510.80 : x
  2. Step 2: Convert to fraction form
    613.52/918.84 = 510.80/x
  3. Step 3: Cross multiply
    613.52x = 918.84 × 510.80
  4. Step 4: Simplify right side
    613.52x = 469,343.47
  5. Step 5: Solve for x
    x = 469,343.47/613.52
  6. Step 6: Final answer
    x = 765.00

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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.