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Finding the Fourth Proportional to 510.02, 703.87 and 321.10

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Solution

The fourth proportional to 510.02, 703.87 and 321.10 is: 443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.02 : 703.87 = 321.10 : x
  2. Step 2: Convert to fraction form
    510.02/703.87 = 321.10/x
  3. Step 3: Cross multiply
    510.02x = 703.87 × 321.10
  4. Step 4: Simplify right side
    510.02x = 226,012.66
  5. Step 5: Solve for x
    x = 226,012.66/510.02
  6. Step 6: Final answer
    x = 443.14

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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.