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Finding the Fourth Proportional to 1,495.84, 2,064.26 and 823.64

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Solution

The fourth proportional to 1,495.84, 2,064.26 and 823.64 is: 1,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.84 : 2,064.26 = 823.64 : x
  2. Step 2: Convert to fraction form
    1,495.84/2,064.26 = 823.64/x
  3. Step 3: Cross multiply
    1,495.84x = 2,064.26 × 823.64
  4. Step 4: Simplify right side
    1,495.84x = 1,700,207.11
  5. Step 5: Solve for x
    x = 1,700,207.11/1,495.84
  6. Step 6: Final answer
    x = 1,136.62

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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.