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Finding the Fourth Proportional to 1,010.63, 1,394.97 and 632.72

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Solution

The fourth proportional to 1,010.63, 1,394.97 and 632.72 is: 873.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.63 : 1,394.97 = 632.72 : x
  2. Step 2: Convert to fraction form
    1,010.63/1,394.97 = 632.72/x
  3. Step 3: Cross multiply
    1,010.63x = 1,394.97 × 632.72
  4. Step 4: Simplify right side
    1,010.63x = 882,625.42
  5. Step 5: Solve for x
    x = 882,625.42/1,010.63
  6. Step 6: Final answer
    x = 873.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.