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Finding the Fourth Proportional to 777.15, 1,165.52 and 366.08

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Solution

The fourth proportional to 777.15, 1,165.52 and 366.08 is: 549.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.15 : 1,165.52 = 366.08 : x
  2. Step 2: Convert to fraction form
    777.15/1,165.52 = 366.08/x
  3. Step 3: Cross multiply
    777.15x = 1,165.52 × 366.08
  4. Step 4: Simplify right side
    777.15x = 426,668.65
  5. Step 5: Solve for x
    x = 426,668.65/777.15
  6. Step 6: Final answer
    x = 549.02

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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.