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Finding the Fourth Proportional to 259.99, 358.59 and 172.51

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Solution

The fourth proportional to 259.99, 358.59 and 172.51 is: 237.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.99 : 358.59 = 172.51 : x
  2. Step 2: Convert to fraction form
    259.99/358.59 = 172.51/x
  3. Step 3: Cross multiply
    259.99x = 358.59 × 172.51
  4. Step 4: Simplify right side
    259.99x = 61,860.36
  5. Step 5: Solve for x
    x = 61,860.36/259.99
  6. Step 6: Final answer
    x = 237.93

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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.