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Finding the Fourth Proportional to 1,023.10, 1,412.01 and 624.68

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Solution

The fourth proportional to 1,023.10, 1,412.01 and 624.68 is: 862.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.10 : 1,412.01 = 624.68 : x
  2. Step 2: Convert to fraction form
    1,023.10/1,412.01 = 624.68/x
  3. Step 3: Cross multiply
    1,023.10x = 1,412.01 × 624.68
  4. Step 4: Simplify right side
    1,023.10x = 882,045.79
  5. Step 5: Solve for x
    x = 882,045.79/1,023.10
  6. Step 6: Final answer
    x = 862.13

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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.