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Finding the Fourth Proportional to 674.40, 942 and 674.40

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Solution

The fourth proportional to 674.40, 942 and 674.40 is: 942.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.40 : 942 = 674.40 : x
  2. Step 2: Convert to fraction form
    674.40/942 = 674.40/x
  3. Step 3: Cross multiply
    674.40x = 942 × 674.40
  4. Step 4: Simplify right side
    674.40x = 635,284.80
  5. Step 5: Solve for x
    x = 635,284.80/674.40
  6. Step 6: Final answer
    x = 942.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.