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Finding the Fourth Proportional to 647.99, 894.19 and 368.18

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Solution

The fourth proportional to 647.99, 894.19 and 368.18 is: 508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.99 : 894.19 = 368.18 : x
  2. Step 2: Convert to fraction form
    647.99/894.19 = 368.18/x
  3. Step 3: Cross multiply
    647.99x = 894.19 × 368.18
  4. Step 4: Simplify right side
    647.99x = 329,221.53
  5. Step 5: Solve for x
    x = 329,221.53/647.99
  6. Step 6: Final answer
    x = 508.06

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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.