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Finding the Fourth Proportional to 1,762.32, 2,643.12 and 608.40

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Solution

The fourth proportional to 1,762.32, 2,643.12 and 608.40 is: 912.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.32 : 2,643.12 = 608.40 : x
  2. Step 2: Convert to fraction form
    1,762.32/2,643.12 = 608.40/x
  3. Step 3: Cross multiply
    1,762.32x = 2,643.12 × 608.40
  4. Step 4: Simplify right side
    1,762.32x = 1,608,074.21
  5. Step 5: Solve for x
    x = 1,608,074.21/1,762.32
  6. Step 6: Final answer
    x = 912.48

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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.