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Finding the Fourth Proportional to 557.02, 835.95 and 313.30

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Solution

The fourth proportional to 557.02, 835.95 and 313.30 is: 470.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.02 : 835.95 = 313.30 : x
  2. Step 2: Convert to fraction form
    557.02/835.95 = 313.30/x
  3. Step 3: Cross multiply
    557.02x = 835.95 × 313.30
  4. Step 4: Simplify right side
    557.02x = 261,903.14
  5. Step 5: Solve for x
    x = 261,903.14/557.02
  6. Step 6: Final answer
    x = 470.19

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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.