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Finding the Fourth Proportional to 465.98, 697.64 and 260.16

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Solution

The fourth proportional to 465.98, 697.64 and 260.16 is: 389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.98 : 697.64 = 260.16 : x
  2. Step 2: Convert to fraction form
    465.98/697.64 = 260.16/x
  3. Step 3: Cross multiply
    465.98x = 697.64 × 260.16
  4. Step 4: Simplify right side
    465.98x = 181,496.72
  5. Step 5: Solve for x
    x = 181,496.72/465.98
  6. Step 6: Final answer
    x = 389.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.