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Finding the Fourth Proportional to 697.93, 1,051.03 and 607.71

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Solution

The fourth proportional to 697.93, 1,051.03 and 607.71 is: 915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.93 : 1,051.03 = 607.71 : x
  2. Step 2: Convert to fraction form
    697.93/1,051.03 = 607.71/x
  3. Step 3: Cross multiply
    697.93x = 1,051.03 × 607.71
  4. Step 4: Simplify right side
    697.93x = 638,726.14
  5. Step 5: Solve for x
    x = 638,726.14/697.93
  6. Step 6: Final answer
    x = 915.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.