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Finding the Fourth Proportional to 1,045.77, 1,568.51 and 578.11

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Solution

The fourth proportional to 1,045.77, 1,568.51 and 578.11 is: 867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.77 : 1,568.51 = 578.11 : x
  2. Step 2: Convert to fraction form
    1,045.77/1,568.51 = 578.11/x
  3. Step 3: Cross multiply
    1,045.77x = 1,568.51 × 578.11
  4. Step 4: Simplify right side
    1,045.77x = 906,766.83
  5. Step 5: Solve for x
    x = 906,766.83/1,045.77
  6. Step 6: Final answer
    x = 867.08

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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.