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Finding the Fourth Proportional to 524.40, 723.55 and 314.64

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Solution

The fourth proportional to 524.40, 723.55 and 314.64 is: 434.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.40 : 723.55 = 314.64 : x
  2. Step 2: Convert to fraction form
    524.40/723.55 = 314.64/x
  3. Step 3: Cross multiply
    524.40x = 723.55 × 314.64
  4. Step 4: Simplify right side
    524.40x = 227,657.77
  5. Step 5: Solve for x
    x = 227,657.77/524.40
  6. Step 6: Final answer
    x = 434.13

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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.