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Finding the Fourth Proportional to 632.34, 874.26 and 485.46

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Solution

The fourth proportional to 632.34, 874.26 and 485.46 is: 671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.34 : 874.26 = 485.46 : x
  2. Step 2: Convert to fraction form
    632.34/874.26 = 485.46/x
  3. Step 3: Cross multiply
    632.34x = 874.26 × 485.46
  4. Step 4: Simplify right side
    632.34x = 424,418.26
  5. Step 5: Solve for x
    x = 424,418.26/632.34
  6. Step 6: Final answer
    x = 671.19

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