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Finding the Fourth Proportional to 1,018.57, 1,405.63 and 598.93

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Solution

The fourth proportional to 1,018.57, 1,405.63 and 598.93 is: 826.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018.57 : 1,405.63 = 598.93 : x
  2. Step 2: Convert to fraction form
    1,018.57/1,405.63 = 598.93/x
  3. Step 3: Cross multiply
    1,018.57x = 1,405.63 × 598.93
  4. Step 4: Simplify right side
    1,018.57x = 841,871.96
  5. Step 5: Solve for x
    x = 841,871.96/1,018.57
  6. Step 6: Final answer
    x = 826.53

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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.