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Finding the Fourth Proportional to 651.20, 897.18 and 503.33

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Solution

The fourth proportional to 651.20, 897.18 and 503.33 is: 693.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.20 : 897.18 = 503.33 : x
  2. Step 2: Convert to fraction form
    651.20/897.18 = 503.33/x
  3. Step 3: Cross multiply
    651.20x = 897.18 × 503.33
  4. Step 4: Simplify right side
    651.20x = 451,577.61
  5. Step 5: Solve for x
    x = 451,577.61/651.20
  6. Step 6: Final answer
    x = 693.45

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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.