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Finding the Fourth Proportional to 1,762.07, 2,643.14 and 666.95

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Solution

The fourth proportional to 1,762.07, 2,643.14 and 666.95 is: 1,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.07 : 2,643.14 = 666.95 : x
  2. Step 2: Convert to fraction form
    1,762.07/2,643.14 = 666.95/x
  3. Step 3: Cross multiply
    1,762.07x = 2,643.14 × 666.95
  4. Step 4: Simplify right side
    1,762.07x = 1,762,842.22
  5. Step 5: Solve for x
    x = 1,762,842.22/1,762.07
  6. Step 6: Final answer
    x = 1,000.44

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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.