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Finding the Fourth Proportional to 1,026.25, 1,538.16 and 441.07

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Solution

The fourth proportional to 1,026.25, 1,538.16 and 441.07 is: 661.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.25 : 1,538.16 = 441.07 : x
  2. Step 2: Convert to fraction form
    1,026.25/1,538.16 = 441.07/x
  3. Step 3: Cross multiply
    1,026.25x = 1,538.16 × 441.07
  4. Step 4: Simplify right side
    1,026.25x = 678,436.23
  5. Step 5: Solve for x
    x = 678,436.23/1,026.25
  6. Step 6: Final answer
    x = 661.08

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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.