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Finding the Fourth Proportional to 525.63, 787.23 and 320.00

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Solution

The fourth proportional to 525.63, 787.23 and 320.00 is: 479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.63 : 787.23 = 320.00 : x
  2. Step 2: Convert to fraction form
    525.63/787.23 = 320.00/x
  3. Step 3: Cross multiply
    525.63x = 787.23 × 320.00
  4. Step 4: Simplify right side
    525.63x = 251,909.66
  5. Step 5: Solve for x
    x = 251,909.66/525.63
  6. Step 6: Final answer
    x = 479.25

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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.