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Finding the Fourth Proportional to 383.07, 528.01 and 258.69

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Solution

The fourth proportional to 383.07, 528.01 and 258.69 is: 356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.07 : 528.01 = 258.69 : x
  2. Step 2: Convert to fraction form
    383.07/528.01 = 258.69/x
  3. Step 3: Cross multiply
    383.07x = 528.01 × 258.69
  4. Step 4: Simplify right side
    383.07x = 136,590.91
  5. Step 5: Solve for x
    x = 136,590.91/383.07
  6. Step 6: Final answer
    x = 356.57

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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.