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Finding the Fourth Proportional to 440.77, 608.27 and 251.71

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Solution

The fourth proportional to 440.77, 608.27 and 251.71 is: 347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.77 : 608.27 = 251.71 : x
  2. Step 2: Convert to fraction form
    440.77/608.27 = 251.71/x
  3. Step 3: Cross multiply
    440.77x = 608.27 × 251.71
  4. Step 4: Simplify right side
    440.77x = 153,104.86
  5. Step 5: Solve for x
    x = 153,104.86/440.77
  6. Step 6: Final answer
    x = 347.36

Related Problems

Find fourth proportional to 220.38, 304.13 and 125.85
Half scale
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Double scale
Find fourth proportional to 441.77, 609.65 and 252.71
Similar ratio
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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.