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Finding the Fourth Proportional to 697.13, 962.10 and 386.63

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Solution

The fourth proportional to 697.13, 962.10 and 386.63 is: 533.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.13 : 962.10 = 386.63 : x
  2. Step 2: Convert to fraction form
    697.13/962.10 = 386.63/x
  3. Step 3: Cross multiply
    697.13x = 962.10 × 386.63
  4. Step 4: Simplify right side
    697.13x = 371,971.91
  5. Step 5: Solve for x
    x = 371,971.91/697.13
  6. Step 6: Final answer
    x = 533.58

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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.