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Finding the Fourth Proportional to 510.27, 703.54 and 440.20

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Solution

The fourth proportional to 510.27, 703.54 and 440.20 is: 606.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.27 : 703.54 = 440.20 : x
  2. Step 2: Convert to fraction form
    510.27/703.54 = 440.20/x
  3. Step 3: Cross multiply
    510.27x = 703.54 × 440.20
  4. Step 4: Simplify right side
    510.27x = 309,697.26
  5. Step 5: Solve for x
    x = 309,697.26/510.27
  6. Step 6: Final answer
    x = 606.93

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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.