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Finding the Fourth Proportional to 524.38, 723.58 and 311.66

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Solution

The fourth proportional to 524.38, 723.58 and 311.66 is: 430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.38 : 723.58 = 311.66 : x
  2. Step 2: Convert to fraction form
    524.38/723.58 = 311.66/x
  3. Step 3: Cross multiply
    524.38x = 723.58 × 311.66
  4. Step 4: Simplify right side
    524.38x = 225,510.16
  5. Step 5: Solve for x
    x = 225,510.16/524.38
  6. Step 6: Final answer
    x = 430.05

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1.5x scale

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.