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Finding the Fourth Proportional to 1,457.34, 2,186.61 and 706.47

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Solution

The fourth proportional to 1,457.34, 2,186.61 and 706.47 is: 1,060.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.34 : 2,186.61 = 706.47 : x
  2. Step 2: Convert to fraction form
    1,457.34/2,186.61 = 706.47/x
  3. Step 3: Cross multiply
    1,457.34x = 2,186.61 × 706.47
  4. Step 4: Simplify right side
    1,457.34x = 1,544,774.37
  5. Step 5: Solve for x
    x = 1,544,774.37/1,457.34
  6. Step 6: Final answer
    x = 1,060.00

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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.