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Finding the Fourth Proportional to 632.98, 945.75 and 621.41

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Solution

The fourth proportional to 632.98, 945.75 and 621.41 is: 928.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.98 : 945.75 = 621.41 : x
  2. Step 2: Convert to fraction form
    632.98/945.75 = 621.41/x
  3. Step 3: Cross multiply
    632.98x = 945.75 × 621.41
  4. Step 4: Simplify right side
    632.98x = 587,695.40
  5. Step 5: Solve for x
    x = 587,695.40/632.98
  6. Step 6: Final answer
    x = 928.47

Related Problems

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.