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Finding the Fourth Proportional to 630.36, 869.40 and 368.04

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Solution

The fourth proportional to 630.36, 869.40 and 368.04 is: 507.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.36 : 869.40 = 368.04 : x
  2. Step 2: Convert to fraction form
    630.36/869.40 = 368.04/x
  3. Step 3: Cross multiply
    630.36x = 869.40 × 368.04
  4. Step 4: Simplify right side
    630.36x = 319,973.98
  5. Step 5: Solve for x
    x = 319,973.98/630.36
  6. Step 6: Final answer
    x = 507.61

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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.