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Finding the Fourth Proportional to 648.32, 894.47 and 368.46

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Solution

The fourth proportional to 648.32, 894.47 and 368.46 is: 508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.32 : 894.47 = 368.46 : x
  2. Step 2: Convert to fraction form
    648.32/894.47 = 368.46/x
  3. Step 3: Cross multiply
    648.32x = 894.47 × 368.46
  4. Step 4: Simplify right side
    648.32x = 329,574.57
  5. Step 5: Solve for x
    x = 329,574.57/648.32
  6. Step 6: Final answer
    x = 508.36

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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.