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Finding the Fourth Proportional to 975.65, 1,346.45 and 577.53

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Solution

The fourth proportional to 975.65, 1,346.45 and 577.53 is: 797.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.65 : 1,346.45 = 577.53 : x
  2. Step 2: Convert to fraction form
    975.65/1,346.45 = 577.53/x
  3. Step 3: Cross multiply
    975.65x = 1,346.45 × 577.53
  4. Step 4: Simplify right side
    975.65x = 777,612.38
  5. Step 5: Solve for x
    x = 777,612.38/975.65
  6. Step 6: Final answer
    x = 797.02

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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.