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Finding the Fourth Proportional to 910.33, 1,256.15 and 537.28

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Solution

The fourth proportional to 910.33, 1,256.15 and 537.28 is: 741.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.33 : 1,256.15 = 537.28 : x
  2. Step 2: Convert to fraction form
    910.33/1,256.15 = 537.28/x
  3. Step 3: Cross multiply
    910.33x = 1,256.15 × 537.28
  4. Step 4: Simplify right side
    910.33x = 674,895.30
  5. Step 5: Solve for x
    x = 674,895.30/910.33
  6. Step 6: Final answer
    x = 741.38

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Double scale
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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.