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Finding the Fourth Proportional to 974.36, 1,460.17 and 425.40

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Solution

The fourth proportional to 974.36, 1,460.17 and 425.40 is: 637.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.36 : 1,460.17 = 425.40 : x
  2. Step 2: Convert to fraction form
    974.36/1,460.17 = 425.40/x
  3. Step 3: Cross multiply
    974.36x = 1,460.17 × 425.40
  4. Step 4: Simplify right side
    974.36x = 621,156.32
  5. Step 5: Solve for x
    x = 621,156.32/974.36
  6. Step 6: Final answer
    x = 637.50

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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.