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Finding the Fourth Proportional to 913.41, 1,370.12 and 264.13

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Solution

The fourth proportional to 913.41, 1,370.12 and 264.13 is: 396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.41 : 1,370.12 = 264.13 : x
  2. Step 2: Convert to fraction form
    913.41/1,370.12 = 264.13/x
  3. Step 3: Cross multiply
    913.41x = 1,370.12 × 264.13
  4. Step 4: Simplify right side
    913.41x = 361,885.05
  5. Step 5: Solve for x
    x = 361,885.05/913.41
  6. Step 6: Final answer
    x = 396.19

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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.