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Finding the Fourth Proportional to 465.84, 643.36 and 368.32

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Solution

The fourth proportional to 465.84, 643.36 and 368.32 is: 508.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.84 : 643.36 = 368.32 : x
  2. Step 2: Convert to fraction form
    465.84/643.36 = 368.32/x
  3. Step 3: Cross multiply
    465.84x = 643.36 × 368.32
  4. Step 4: Simplify right side
    465.84x = 236,962.36
  5. Step 5: Solve for x
    x = 236,962.36/465.84
  6. Step 6: Final answer
    x = 508.68

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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.