Home / 1,270.16-1,905.55-612.08

Finding the Fourth Proportional to 1,270.16, 1,905.55 and 612.08

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Solution

The fourth proportional to 1,270.16, 1,905.55 and 612.08 is: 918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.16 : 1,905.55 = 612.08 : x
  2. Step 2: Convert to fraction form
    1,270.16/1,905.55 = 612.08/x
  3. Step 3: Cross multiply
    1,270.16x = 1,905.55 × 612.08
  4. Step 4: Simplify right side
    1,270.16x = 1,166,337.99
  5. Step 5: Solve for x
    x = 1,166,337.99/1,270.16
  6. Step 6: Final answer
    x = 918.26

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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.