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Finding the Fourth Proportional to 524.34, 785.52 and 421.16

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Solution

The fourth proportional to 524.34, 785.52 and 421.16 is: 630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.34 : 785.52 = 421.16 : x
  2. Step 2: Convert to fraction form
    524.34/785.52 = 421.16/x
  3. Step 3: Cross multiply
    524.34x = 785.52 × 421.16
  4. Step 4: Simplify right side
    524.34x = 330,825.68
  5. Step 5: Solve for x
    x = 330,825.68/524.34
  6. Step 6: Final answer
    x = 630.94

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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.