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Finding the Fourth Proportional to 934.19, 1,401.53 and 284.92

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Solution

The fourth proportional to 934.19, 1,401.53 and 284.92 is: 427.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.19 : 1,401.53 = 284.92 : x
  2. Step 2: Convert to fraction form
    934.19/1,401.53 = 284.92/x
  3. Step 3: Cross multiply
    934.19x = 1,401.53 × 284.92
  4. Step 4: Simplify right side
    934.19x = 399,323.93
  5. Step 5: Solve for x
    x = 399,323.93/934.19
  6. Step 6: Final answer
    x = 427.45

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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.