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Finding the Fourth Proportional to 894.27, 1,341 and 431.19

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Solution

The fourth proportional to 894.27, 1,341 and 431.19 is: 646.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.27 : 1,341 = 431.19 : x
  2. Step 2: Convert to fraction form
    894.27/1,341 = 431.19/x
  3. Step 3: Cross multiply
    894.27x = 1,341 × 431.19
  4. Step 4: Simplify right side
    894.27x = 578,225.79
  5. Step 5: Solve for x
    x = 578,225.79/894.27
  6. Step 6: Final answer
    x = 646.59

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Double scale
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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.