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Finding the Fourth Proportional to 647.98, 894.23 and 368.22

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Solution

The fourth proportional to 647.98, 894.23 and 368.22 is: 508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.98 : 894.23 = 368.22 : x
  2. Step 2: Convert to fraction form
    647.98/894.23 = 368.22/x
  3. Step 3: Cross multiply
    647.98x = 894.23 × 368.22
  4. Step 4: Simplify right side
    647.98x = 329,276.26
  5. Step 5: Solve for x
    x = 329,276.26/647.98
  6. Step 6: Final answer
    x = 508.16

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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.