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Finding the Fourth Proportional to 603.25, 831.67 and 510.91

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Solution

The fourth proportional to 603.25, 831.67 and 510.91 is: 704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.25 : 831.67 = 510.91 : x
  2. Step 2: Convert to fraction form
    603.25/831.67 = 510.91/x
  3. Step 3: Cross multiply
    603.25x = 831.67 × 510.91
  4. Step 4: Simplify right side
    603.25x = 424,905.16
  5. Step 5: Solve for x
    x = 424,905.16/603.25
  6. Step 6: Final answer
    x = 704.36

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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.