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Finding the Fourth Proportional to 523.22, 720.21 and 474.01

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Solution

The fourth proportional to 523.22, 720.21 and 474.01 is: 652.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.22 : 720.21 = 474.01 : x
  2. Step 2: Convert to fraction form
    523.22/720.21 = 474.01/x
  3. Step 3: Cross multiply
    523.22x = 720.21 × 474.01
  4. Step 4: Simplify right side
    523.22x = 341,386.74
  5. Step 5: Solve for x
    x = 341,386.74/523.22
  6. Step 6: Final answer
    x = 652.47

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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.