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Finding the Fourth Proportional to 1,048.99, 1,447.76 and 655.81

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Solution

The fourth proportional to 1,048.99, 1,447.76 and 655.81 is: 905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.99 : 1,447.76 = 655.81 : x
  2. Step 2: Convert to fraction form
    1,048.99/1,447.76 = 655.81/x
  3. Step 3: Cross multiply
    1,048.99x = 1,447.76 × 655.81
  4. Step 4: Simplify right side
    1,048.99x = 949,455.49
  5. Step 5: Solve for x
    x = 949,455.49/1,048.99
  6. Step 6: Final answer
    x = 905.11

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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.