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Finding the Fourth Proportional to 1,623.21, 2,432.74 and 790.47

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Solution

The fourth proportional to 1,623.21, 2,432.74 and 790.47 is: 1,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.21 : 2,432.74 = 790.47 : x
  2. Step 2: Convert to fraction form
    1,623.21/2,432.74 = 790.47/x
  3. Step 3: Cross multiply
    1,623.21x = 2,432.74 × 790.47
  4. Step 4: Simplify right side
    1,623.21x = 1,923,008.98
  5. Step 5: Solve for x
    x = 1,923,008.98/1,623.21
  6. Step 6: Final answer
    x = 1,184.70

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1.5x scale

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.