Home / 1,030.04-1,421.45-557.93

Finding the Fourth Proportional to 1,030.04, 1,421.45 and 557.93

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Solution

The fourth proportional to 1,030.04, 1,421.45 and 557.93 is: 769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.04 : 1,421.45 = 557.93 : x
  2. Step 2: Convert to fraction form
    1,030.04/1,421.45 = 557.93/x
  3. Step 3: Cross multiply
    1,030.04x = 1,421.45 × 557.93
  4. Step 4: Simplify right side
    1,030.04x = 793,077.02
  5. Step 5: Solve for x
    x = 793,077.02/1,030.04
  6. Step 6: Final answer
    x = 769.95

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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.