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Finding the Fourth Proportional to 1,457.93, 2,011.26 and 860.01

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Solution

The fourth proportional to 1,457.93, 2,011.26 and 860.01 is: 1,186.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.93 : 2,011.26 = 860.01 : x
  2. Step 2: Convert to fraction form
    1,457.93/2,011.26 = 860.01/x
  3. Step 3: Cross multiply
    1,457.93x = 2,011.26 × 860.01
  4. Step 4: Simplify right side
    1,457.93x = 1,729,699.41
  5. Step 5: Solve for x
    x = 1,729,699.41/1,457.93
  6. Step 6: Final answer
    x = 1,186.41

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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.