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Finding the Fourth Proportional to 845.61, 1,268.59 and 358.66

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Solution

The fourth proportional to 845.61, 1,268.59 and 358.66 is: 538.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.61 : 1,268.59 = 358.66 : x
  2. Step 2: Convert to fraction form
    845.61/1,268.59 = 358.66/x
  3. Step 3: Cross multiply
    845.61x = 1,268.59 × 358.66
  4. Step 4: Simplify right side
    845.61x = 454,992.49
  5. Step 5: Solve for x
    x = 454,992.49/845.61
  6. Step 6: Final answer
    x = 538.06

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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.