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Finding the Fourth Proportional to 557.40, 836.12 and 249.19

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Solution

The fourth proportional to 557.40, 836.12 and 249.19 is: 373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.40 : 836.12 = 249.19 : x
  2. Step 2: Convert to fraction form
    557.40/836.12 = 249.19/x
  3. Step 3: Cross multiply
    557.40x = 836.12 × 249.19
  4. Step 4: Simplify right side
    557.40x = 208,351.50
  5. Step 5: Solve for x
    x = 208,351.50/557.40
  6. Step 6: Final answer
    x = 373.80

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Double scale
Find fourth proportional to 558.40, 837.62 and 250.19
Similar ratio
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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.