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Finding the Fourth Proportional to 766.02, 1,058.07 and 666.24

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Solution

The fourth proportional to 766.02, 1,058.07 and 666.24 is: 920.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.02 : 1,058.07 = 666.24 : x
  2. Step 2: Convert to fraction form
    766.02/1,058.07 = 666.24/x
  3. Step 3: Cross multiply
    766.02x = 1,058.07 × 666.24
  4. Step 4: Simplify right side
    766.02x = 704,927.09
  5. Step 5: Solve for x
    x = 704,927.09/766.02
  6. Step 6: Final answer
    x = 920.25

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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.