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Finding the Fourth Proportional to 523.20, 722.07 and 507.06

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Solution

The fourth proportional to 523.20, 722.07 and 507.06 is: 699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.20 : 722.07 = 507.06 : x
  2. Step 2: Convert to fraction form
    523.20/722.07 = 507.06/x
  3. Step 3: Cross multiply
    523.20x = 722.07 × 507.06
  4. Step 4: Simplify right side
    523.20x = 366,132.81
  5. Step 5: Solve for x
    x = 366,132.81/523.20
  6. Step 6: Final answer
    x = 699.80

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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.