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Finding the Fourth Proportional to 457.37, 631.22 and 270.77

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Solution

The fourth proportional to 457.37, 631.22 and 270.77 is: 373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.37 : 631.22 = 270.77 : x
  2. Step 2: Convert to fraction form
    457.37/631.22 = 270.77/x
  3. Step 3: Cross multiply
    457.37x = 631.22 × 270.77
  4. Step 4: Simplify right side
    457.37x = 170,910.93
  5. Step 5: Solve for x
    x = 170,910.93/457.37
  6. Step 6: Final answer
    x = 373.68

Related Problems

Find fourth proportional to 228.68, 315.61 and 135.38
Half scale
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Double scale
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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.