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Finding the Fourth Proportional to 1,048.65, 1,447.08 and 576.46

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Solution

The fourth proportional to 1,048.65, 1,447.08 and 576.46 is: 795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.65 : 1,447.08 = 576.46 : x
  2. Step 2: Convert to fraction form
    1,048.65/1,447.08 = 576.46/x
  3. Step 3: Cross multiply
    1,048.65x = 1,447.08 × 576.46
  4. Step 4: Simplify right side
    1,048.65x = 834,176.50
  5. Step 5: Solve for x
    x = 834,176.50/1,048.65
  6. Step 6: Final answer
    x = 795.48

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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.