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Finding the Fourth Proportional to 1,047.32, 1,445.24 and 605.19

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Solution

The fourth proportional to 1,047.32, 1,445.24 and 605.19 is: 835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.32 : 1,445.24 = 605.19 : x
  2. Step 2: Convert to fraction form
    1,047.32/1,445.24 = 605.19/x
  3. Step 3: Cross multiply
    1,047.32x = 1,445.24 × 605.19
  4. Step 4: Simplify right side
    1,047.32x = 874,641.77
  5. Step 5: Solve for x
    x = 874,641.77/1,047.32
  6. Step 6: Final answer
    x = 835.13

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Half 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.