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Finding the Fourth Proportional to 1,316.48, 1,817.72 and 924.03

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Solution

The fourth proportional to 1,316.48, 1,817.72 and 924.03 is: 1,275.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.48 : 1,817.72 = 924.03 : x
  2. Step 2: Convert to fraction form
    1,316.48/1,817.72 = 924.03/x
  3. Step 3: Cross multiply
    1,316.48x = 1,817.72 × 924.03
  4. Step 4: Simplify right side
    1,316.48x = 1,679,623.19
  5. Step 5: Solve for x
    x = 1,679,623.19/1,316.48
  6. Step 6: Final answer
    x = 1,275.85

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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.