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Finding the Fourth Proportional to 910.23, 1,355.93 and 883.01

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Solution

The fourth proportional to 910.23, 1,355.93 and 883.01 is: 1,315.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.23 : 1,355.93 = 883.01 : x
  2. Step 2: Convert to fraction form
    910.23/1,355.93 = 883.01/x
  3. Step 3: Cross multiply
    910.23x = 1,355.93 × 883.01
  4. Step 4: Simplify right side
    910.23x = 1,197,288.55
  5. Step 5: Solve for x
    x = 1,197,288.55/910.23
  6. Step 6: Final answer
    x = 1,315.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.