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Finding the Fourth Proportional to 918.03, 1,267.08 and 603.57

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Solution

The fourth proportional to 918.03, 1,267.08 and 603.57 is: 833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.03 : 1,267.08 = 603.57 : x
  2. Step 2: Convert to fraction form
    918.03/1,267.08 = 603.57/x
  3. Step 3: Cross multiply
    918.03x = 1,267.08 × 603.57
  4. Step 4: Simplify right side
    918.03x = 764,771.48
  5. Step 5: Solve for x
    x = 764,771.48/918.03
  6. Step 6: Final answer
    x = 833.06

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1.5x scale

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.