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Finding the Fourth Proportional to 1,056.42, 1,457.87 and 590.67

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Solution

The fourth proportional to 1,056.42, 1,457.87 and 590.67 is: 815.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.42 : 1,457.87 = 590.67 : x
  2. Step 2: Convert to fraction form
    1,056.42/1,457.87 = 590.67/x
  3. Step 3: Cross multiply
    1,056.42x = 1,457.87 × 590.67
  4. Step 4: Simplify right side
    1,056.42x = 861,117.12
  5. Step 5: Solve for x
    x = 861,117.12/1,056.42
  6. Step 6: Final answer
    x = 815.13

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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.