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Finding the Fourth Proportional to 1,064.71, 1,598.23 and 786.21

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Solution

The fourth proportional to 1,064.71, 1,598.23 and 786.21 is: 1,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.71 : 1,598.23 = 786.21 : x
  2. Step 2: Convert to fraction form
    1,064.71/1,598.23 = 786.21/x
  3. Step 3: Cross multiply
    1,064.71x = 1,598.23 × 786.21
  4. Step 4: Simplify right side
    1,064.71x = 1,256,548.39
  5. Step 5: Solve for x
    x = 1,256,548.39/1,064.71
  6. Step 6: Final answer
    x = 1,180.18

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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.