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Finding the Fourth Proportional to 910.19, 1,256.01 and 537.19

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Solution

The fourth proportional to 910.19, 1,256.01 and 537.19 is: 741.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.19 : 1,256.01 = 537.19 : x
  2. Step 2: Convert to fraction form
    910.19/1,256.01 = 537.19/x
  3. Step 3: Cross multiply
    910.19x = 1,256.01 × 537.19
  4. Step 4: Simplify right side
    910.19x = 674,716.01
  5. Step 5: Solve for x
    x = 674,716.01/910.19
  6. Step 6: Final answer
    x = 741.29

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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.