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Finding the Fourth Proportional to 1,061.48, 1,465.44 and 707.48

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Solution

The fourth proportional to 1,061.48, 1,465.44 and 707.48 is: 976.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.48 : 1,465.44 = 707.48 : x
  2. Step 2: Convert to fraction form
    1,061.48/1,465.44 = 707.48/x
  3. Step 3: Cross multiply
    1,061.48x = 1,465.44 × 707.48
  4. Step 4: Simplify right side
    1,061.48x = 1,036,769.49
  5. Step 5: Solve for x
    x = 1,036,769.49/1,061.48
  6. Step 6: Final answer
    x = 976.72

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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.