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Finding the Fourth Proportional to 945.56, 1,418 and 360.42

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Solution

The fourth proportional to 945.56, 1,418 and 360.42 is: 540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.56 : 1,418 = 360.42 : x
  2. Step 2: Convert to fraction form
    945.56/1,418 = 360.42/x
  3. Step 3: Cross multiply
    945.56x = 1,418 × 360.42
  4. Step 4: Simplify right side
    945.56x = 511,075.56
  5. Step 5: Solve for x
    x = 511,075.56/945.56
  6. Step 6: Final answer
    x = 540.50

Related Problems

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