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Finding the Fourth Proportional to 841.38, 1,161 and 526.65

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Solution

The fourth proportional to 841.38, 1,161 and 526.65 is: 726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.38 : 1,161 = 526.65 : x
  2. Step 2: Convert to fraction form
    841.38/1,161 = 526.65/x
  3. Step 3: Cross multiply
    841.38x = 1,161 × 526.65
  4. Step 4: Simplify right side
    841.38x = 611,440.65
  5. Step 5: Solve for x
    x = 611,440.65/841.38
  6. Step 6: Final answer
    x = 726.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.