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Finding the Fourth Proportional to 627.90, 942.24 and 354.18

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Solution

The fourth proportional to 627.90, 942.24 and 354.18 is: 531.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.90 : 942.24 = 354.18 : x
  2. Step 2: Convert to fraction form
    627.90/942.24 = 354.18/x
  3. Step 3: Cross multiply
    627.90x = 942.24 × 354.18
  4. Step 4: Simplify right side
    627.90x = 333,722.56
  5. Step 5: Solve for x
    x = 333,722.56/627.90
  6. Step 6: Final answer
    x = 531.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 628.90, 943.74 and 355.18
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.