Home / 918.03-1,376.24-340.50

Finding the Fourth Proportional to 918.03, 1,376.24 and 340.50

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Solution

The fourth proportional to 918.03, 1,376.24 and 340.50 is: 510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.03 : 1,376.24 = 340.50 : x
  2. Step 2: Convert to fraction form
    918.03/1,376.24 = 340.50/x
  3. Step 3: Cross multiply
    918.03x = 1,376.24 × 340.50
  4. Step 4: Simplify right side
    918.03x = 468,608.02
  5. Step 5: Solve for x
    x = 468,608.02/918.03
  6. Step 6: Final answer
    x = 510.45

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Double scale
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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.