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Finding the Fourth Proportional to 941.24, 1,412.01 and 421.35

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Solution

The fourth proportional to 941.24, 1,412.01 and 421.35 is: 632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.24 : 1,412.01 = 421.35 : x
  2. Step 2: Convert to fraction form
    941.24/1,412.01 = 421.35/x
  3. Step 3: Cross multiply
    941.24x = 1,412.01 × 421.35
  4. Step 4: Simplify right side
    941.24x = 594,950.41
  5. Step 5: Solve for x
    x = 594,950.41/941.24
  6. Step 6: Final answer
    x = 632.10

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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.