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Finding the Fourth Proportional to 557.49, 836.57 and 323.53

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Solution

The fourth proportional to 557.49, 836.57 and 323.53 is: 485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.49 : 836.57 = 323.53 : x
  2. Step 2: Convert to fraction form
    557.49/836.57 = 323.53/x
  3. Step 3: Cross multiply
    557.49x = 836.57 × 323.53
  4. Step 4: Simplify right side
    557.49x = 270,655.49
  5. Step 5: Solve for x
    x = 270,655.49/557.49
  6. Step 6: Final answer
    x = 485.49

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1.5x scale

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.