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Finding the Fourth Proportional to 664.52, 917.03 and 384.77

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Solution

The fourth proportional to 664.52, 917.03 and 384.77 is: 530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.52 : 917.03 = 384.77 : x
  2. Step 2: Convert to fraction form
    664.52/917.03 = 384.77/x
  3. Step 3: Cross multiply
    664.52x = 917.03 × 384.77
  4. Step 4: Simplify right side
    664.52x = 352,842.01
  5. Step 5: Solve for x
    x = 352,842.01/664.52
  6. Step 6: Final answer
    x = 530.98

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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.