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Finding the Fourth Proportional to 525.65, 787.93 and 395.51

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Solution

The fourth proportional to 525.65, 787.93 and 395.51 is: 592.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.65 : 787.93 = 395.51 : x
  2. Step 2: Convert to fraction form
    525.65/787.93 = 395.51/x
  3. Step 3: Cross multiply
    525.65x = 787.93 × 395.51
  4. Step 4: Simplify right side
    525.65x = 311,629.27
  5. Step 5: Solve for x
    x = 311,629.27/525.65
  6. Step 6: Final answer
    x = 592.85

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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.