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Finding the Fourth Proportional to 1,566.68, 2,162.03 and 977.22

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Solution

The fourth proportional to 1,566.68, 2,162.03 and 977.22 is: 1,348.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.68 : 2,162.03 = 977.22 : x
  2. Step 2: Convert to fraction form
    1,566.68/2,162.03 = 977.22/x
  3. Step 3: Cross multiply
    1,566.68x = 2,162.03 × 977.22
  4. Step 4: Simplify right side
    1,566.68x = 2,112,774.07
  5. Step 5: Solve for x
    x = 2,112,774.07/1,566.68
  6. Step 6: Final answer
    x = 1,348.57

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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.